Hi,
> Performance. It somewhat slowed primitive dispatch since a timer check had to be done for each primitive.

I would really like to help Chris out on this.

I have downloaded http://www.squeakvm.org/unix/release/Squeak-3.6-0.src.tar.gz and am comparing interp.c against that in 3.10-4.

Could you be able to point me to the code that has been removed and any advise on whether I can patch 3.10-4 to build Chris a VM 
so that he can profile?

Thanks

Brent